CN101315098A - Novel structure of open-die forging steel crankshaft and production method thereof - Google Patents
Novel structure of open-die forging steel crankshaft and production method thereof Download PDFInfo
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- CN101315098A CN101315098A CNA2008101503820A CN200810150382A CN101315098A CN 101315098 A CN101315098 A CN 101315098A CN A2008101503820 A CNA2008101503820 A CN A2008101503820A CN 200810150382 A CN200810150382 A CN 200810150382A CN 101315098 A CN101315098 A CN 101315098A
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- crank
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- edge surface
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention relates to a novel structure of a crank shaft made from steel by open-die forging and a production method thereof. The new structure has the advantages of simple processing process, low process load, remarkably improved work efficiency, and full utilization of raw materials. The inventive crank shaft comprises a crank and a balancing block, wherein the joint surface of a crank arm of the crank and the balancing block is a cambered surface or a circular conical surface with the same diameter. The production method of the crank shaft comprises the steps of milling or planing two side faces of the crank arm to a flat surface, and turning to obtain other machined surfaces of the crank arm; and processing a complete circular ring, and turning the inner marginal surface and the outer marginal surface of the balancing block to cambered surfaces or turning the inner marginal surface of the balancing block to a tapered cambered surface and turning the outer marginal surface of the balancing block to a cambered surface, and then cutting the circular ring into circular-arc segments.
Description
One, technical field:
The present invention relates to a kind of compressor crank shaft, especially relate to a kind of new structure and manufacture method of open-die forging steel crankshaft.
Two, background technique:
When the small lot reciprocating compressor is produced, if adopt steel crankshaft, then be generally the open die forgings blank, shape is removed redundance (shown in the reticulate pattern) earlier by boring (saw) bed as depicted in figs. 1 and 2, by milling (plane) bed cutting bent axle bi-side, by machined into main journal and crank pin, finally be processed into structure as shown in Figure 3 and Figure 4 again, such course of working is very complicated, amount of finish is big, and the raw material utilization is also insufficient.
Three, summary of the invention:
The present invention provides a kind of new structure and manufacture method of open-die forging steel crankshaft in order to solve the deficiency in the above-mentioned background technology, and its course of working is simple, and amount of finish is little, has improved work efficiency greatly, and has made full use of raw material.
For achieving the above object, the technical solution used in the present invention is:
A kind of new structure of open-die forging steel crankshaft comprises crank and equilibrium block, it is characterized in that: the junction plane of cranking arm with equilibrium block of crank is arc surface or the conical surface that is in same radius.
The inner edge surface and the outer edge surface of above-mentioned equilibrium block are arc surface.
The inner edge surface of above-mentioned equilibrium block is the arc surface that has tapering, and outer edge surface is an arc surface.
A kind of manufacture method of new structure of open-die forging steel crankshaft is characterized in that: the bi-side of cranking arm are by milling or plane into the plane, and other working surface of cranking arm is processed by turning; Equilibrium block is full circle ring of casting, and inner edge surface and the outer edge surface with equilibrium block is lathed arc surface again, or the inner edge surface of equilibrium block is lathed the arc surface that has tapering, and outer edge surface is lathed arc surface, annulus is cut into the circular arc piece again,
Compared with prior art, the advantage and the effect that have of the present invention is as follows:
The present invention makes full use of its raw material according to the open die forgings blank, adopts turning processing as far as possible, is designed to the bent axle new structure, makes processing technology simplify greatly, has effectively improved work efficiency, has reduced cost.
Four, description of drawings:
Fig. 1 is the structural representation of existing open die forgings blank;
Fig. 2 is that the A of Fig. 1 is to view;
Fig. 3 is the structural representation of existing crankshaft crank;
Fig. 4 is that the B of Fig. 3 is to view;
Fig. 5 is the structural representation of bent axle of the present invention;
Fig. 6 is that the C of Fig. 5 is to view;
Fig. 7 is the structural representation of the embodiment of the invention 1 crankshaft crank (crutches);
Fig. 8 is that the D of Fig. 7 is to view;
Fig. 9 is the structural representation of the embodiment of the invention 1 crankshaft crank (singly turning);
Figure 10 is that the E of Fig. 9 is to view;
Figure 11 is the structural representation of the embodiment of the invention 2 crankshaft cranks (crutches);
Figure 12 is that the F of Figure 11 is to view;
Figure 13 is the structural representation of the embodiment of the invention 2 crankshaft cranks (singly turning);
Figure 14 is that the G of Figure 13 is to view;
Figure 15 is the structural representation of the equilibrium block that matches with embodiment 1;
Figure 16 is that the H of Figure 15 is to view;
Figure 17 is the structural representation of the equilibrium block that matches with embodiment 2;
Figure 18 is that the I of Figure 17 is to view;
Figure 19 is the structural representation of the embodiment of the invention 3 crankshaft cranks;
Figure 20 is that the J of Figure 19 is to view.
Five, embodiment:
Referring to Fig. 5 and Fig. 6, bent axle comprises crank and equilibrium block, and the junction plane of cranking arm with equilibrium block of crank is arc surface or the conical surface that is in same radius, and the arc surface outside has chamfering, and the inner edge surface of equilibrium block is the arc surface that has tapering, and outer edge surface is an arc surface.Fig. 7, Figure 8 shows that embodiment's 1 bent axle double throw structure, Fig. 9 and Figure 10 shows that the single throw structure of embodiment's 1 bent axle, wherein
Face and
Face reaches
Face is with main journal, turning moulding in disposable clamping, and referring to Figure 15 and Figure 16, Figure 15 and Figure 16 are the structural representation of the equilibrium block that matches with crankshaft crank, the inner edge surface of equilibrium block and outer edge surface are arc surface, finish by turning.Figure 11, Figure 12 shows that embodiment's 2 bent axle double throw structures, Figure 13 and Figure 14 shows that the single throw structure of embodiment's 1 bent axle, the arc surface outside has chamfering, wherein
Face with
Face and
Face reaches
Face is with main journal, turning moulding in disposable clamping.Referring to Figure 17 and Figure 18, Figure 17 and Figure 18 are the structural representation of the equilibrium block that matches with crankshaft crank, and the inner edge surface of equilibrium block is the arc surface that has tapering, and outer edge surface is an arc surface.Figure 19, Figure 20 shows that the structure of embodiment's 3 crankshaft cranks, its difference from Example 2 is
Face need mill (plane) and cut machine shaping,
Face reaches
Face is with main journal turning moulding in disposable clamping, but clamping aftershaping separately,
Still need add on the face and join equilibrium block as shown in figure 15.
The manufacturing process of bent axle of the present invention: the bi-side of cranking arm are by milling or plane into the plane, and other working surface of cranking arm is processed by turning; Equilibrium block is to cast a full circle ring earlier, and inner edge surface and the outer edge surface with equilibrium block is lathed arc surface again, or the inner edge surface of equilibrium block is lathed the arc surface that has tapering, and outer edge surface is lathed arc surface, annulus is cut into the circular arc piece again.
Claims (4)
1, a kind of new structure of open-die forging steel crankshaft comprises crank and equilibrium block, it is characterized in that: the junction plane of cranking arm with equilibrium block of crank is arc surface or the conical surface that is in same radius.
2, the new structure of a kind of open-die forging steel crankshaft according to claim 1 is characterized in that: the inner edge surface and the outer edge surface of equilibrium block are arc surface.
3, the new structure of a kind of open-die forging steel crankshaft according to claim 2 is characterized in that: the inner edge surface of equilibrium block is the arc surface that has tapering, and outer edge surface is an arc surface.
4, the manufacture method of the new structure of a kind of open-die forging steel crankshaft according to claim 1 is characterized in that: the bi-side of cranking arm are by milling or plane into the plane, and other working surface of cranking arm is processed by turning; Equilibrium block is full circle ring of casting, and inner edge surface and the outer edge surface with equilibrium block is lathed arc surface again, or the inner edge surface of equilibrium block is lathed the arc surface that has tapering, and outer edge surface is lathed arc surface, annulus is cut into the circular arc piece again,
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101503820A CN101315098B (en) | 2008-07-18 | 2008-07-18 | Novel structure of open-die forging steel crankshaft and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101503820A CN101315098B (en) | 2008-07-18 | 2008-07-18 | Novel structure of open-die forging steel crankshaft and production method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN101315098A true CN101315098A (en) | 2008-12-03 |
| CN101315098B CN101315098B (en) | 2010-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008101503820A Active CN101315098B (en) | 2008-07-18 | 2008-07-18 | Novel structure of open-die forging steel crankshaft and production method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103008525A (en) * | 2012-12-29 | 2013-04-03 | 桐乡市隆盛精密机械有限公司 | Cold forging method of crankshaft of automobile compressor |
| CN110206722A (en) * | 2019-07-04 | 2019-09-06 | 中国有色(沈阳)泵业有限公司 | Diaphragm pump new type power end crankshaft and the crank portion dress for using the crankshaft |
| CN111656028A (en) * | 2018-01-30 | 2020-09-11 | 日本制铁株式会社 | Crankshaft |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5237892A (en) * | 1992-07-28 | 1993-08-24 | Tecumseh Products Company | Reduced material crankshaft fabrication |
| CN2600640Y (en) * | 2002-03-25 | 2004-01-21 | 武汉重工铸锻有限责任公司 | MTU 20V956TB92 diesel engine crankshaft assembly |
-
2008
- 2008-07-18 CN CN2008101503820A patent/CN101315098B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103008525A (en) * | 2012-12-29 | 2013-04-03 | 桐乡市隆盛精密机械有限公司 | Cold forging method of crankshaft of automobile compressor |
| CN103008525B (en) * | 2012-12-29 | 2015-07-22 | 桐乡市隆盛精密机械有限公司 | Cold forging method of crankshaft of automobile compressor |
| CN111656028A (en) * | 2018-01-30 | 2020-09-11 | 日本制铁株式会社 | Crankshaft |
| CN111656028B (en) * | 2018-01-30 | 2022-04-26 | 日本制铁株式会社 | Crankshaft |
| CN110206722A (en) * | 2019-07-04 | 2019-09-06 | 中国有色(沈阳)泵业有限公司 | Diaphragm pump new type power end crankshaft and the crank portion dress for using the crankshaft |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101315098B (en) | 2010-12-29 |
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| C14 | Grant of patent or utility model | ||
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Owner name: ZHEJIANG QIANGSHENG COMPRESSOR MANUFACTURING CO., Free format text: FORMER OWNER: WENZHOU QIANGSHENG PETROCHEMICAL MACHINERY CO., LTD. Effective date: 20120523 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 325011 WENZHOU, ZHEJIANG PROVINCE TO: 325000 WENZHOU, ZHEJIANG PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20120523 Address after: 325000 No. fourteen, 486 Binhai Road, Wenzhou economic and Technological Development Zone, Wenzhou, Zhejiang, China Patentee after: Zhejiang Qiangsheng Compressor Manufacturing Co., Ltd. Address before: 325011, No. 161, Jiulong Mountain Road, 35 East Zone, Wenzhou economic and Technological Development Zone, Zhejiang, Wenzhou Patentee before: Wenzhou Qiangsheng Petrochemical Machinery Co., Ltd. |